Finding the Fourth Proportional to 37,837.62, 52,215.92 and 21,931.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,837.62 : 52,215.92 = 21,931.31 : x
2. Step 2: Convert to fraction form
   37,837.62/52,215.92 = 21,931.31/x
3. Step 3: Cross multiply
   37,837.62x = 52,215.92 × 21,931.31
4. Step 4: Simplify right side
   37,837.62x = 1,145,163,157.72
5. Step 5: Solve for x
   x = 1,145,163,157.72/37,837.62
6. Step 6: Final answer
   x = 30,265.20